Hi Pankaj, On 15/01/15 06:41, Pankaj Dubey wrote: > +CC: Thomas Abraham <thomas.ab@xxxxxxxxxxx> > > Hi Mark, > > On Monday 12 January 2015 11:56 PM, Marc Zyngier wrote: >> Exynos has been (ab)using the gic_arch_extn to provide >> wakeup from suspend, and it makes a lot of sense to convert >> this code to use stacked domains instead. >> >> This patch does just this, updating the DT files to actually >> reflect what the HW provides. >> >> BIG FAT WARNING: because the DTs were so far lying by not >> exposing the fact that the PMU block is actually the first >> interrupt controller in the chain for RTC, kernels with this patch >> applied wont have any suspend-resume facility when booted >> with old DTs, and old kernels with updated DTs may not even boot. >> >> Also, I stronly suspect that there is more than two wake-up >> interrupts on these platforms, but I leave it to the maintainers >> to fix their mess. >> >> Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx> >> > > I tested this series on Exynos5250, using kgene/for-next and > linux-next/next-20150114, but S2R failed on Exynos5250 based SMDK board. > > Following is the log I got on SMDK5250 board, (note I have added some > debugging log to know what is happening) > > I can see is S3C-RTC's "enable_irq_wake" is failing with error -6. > I also observed that even though we are adding pmu_domain_ops using > irq_domain_add_hierarchy, but none of pmu_domain_ops are getting called. > > Please let me know if I am missing anything or do I need to modify > anything to test S2R on Exynos SoC. Thanks for giving it a go. One think I noticed is that I forgot to add a "#interrupt-cells = <3>;" to the pmu_system_controller node. Also, it would be interesting to know what is the hwirq associated with the irq_desc you've printed below. Thanks, M. > --------------------- > echo +10 > /sys/class/rtc/rtc1/wakealarm; sleep 1; echo mem > /sys/power/sta > te > [ 257.428163] PM: Syncing filesystems ... done. > [ 257.431786] Freezing user space processes ... (elapsed 0.003 seconds) > done. > [ 257.439680] Freezing remaining freezable tasks ... (elapsed 0.001 > seconds) done. > [ 257.544451] wake enabled for irq 116 > [ 257.546916] CPU: 0 PID: 1311 Comm: ash Not tainted > 3.19.0-rc4-next-20150114-00023-g492ff37 #15 > [ 257.555141] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree) > [ 257.561231] [<c0014430>] (unwind_backtrace) from [<c0011594>] > (show_stack+0x10/0x14) > [ 257.568948] [<c0011594>] (show_stack) from [<c0418b00>] > (dump_stack+0x84/0xc4) > [ 257.576151] [<c0418b00>] (dump_stack) from [<c005ce30>] > (set_irq_wake_real+0x58/0x8c) > [ 257.583961] [<c005ce30>] (set_irq_wake_real) from [<c005cef0>] > (irq_set_irq_wake+0x8c/0xf0) > [ 257.592295] [<c005cef0>] (irq_set_irq_wake) from [<c02e9d94>] > (s3c_rtc_suspend+0xb8/0xdc) > [ 257.600456] [<c02e9d94>] (s3c_rtc_suspend) from [<c0298c80>] > (dpm_run_callback.isra.13+0x1c/0x60) > [ 257.609308] [<c0298c80>] (dpm_run_callback.isra.13) from [<c02996a0>] > (__device_suspend+0x128/0x2d0) > [ 257.618422] [<c02996a0>] (__device_suspend) from [<c029a850>] > (dpm_suspend+0x64/0x22c) > [ 257.626320] [<c029a850>] (dpm_suspend) from [<c0058488>] > (suspend_devices_and_enter+0x88/0x3dc) > [ 257.634999] [<c0058488>] (suspend_devices_and_enter) from > [<c00589c8>] (pm_suspend+0x1ec/0x24c) > [ 257.643680] [<c00589c8>] (pm_suspend) from [<c00576e0>] > (state_store+0x68/0xb8) > [ 257.650972] [<c00576e0>] (state_store) from [<c012835c>] > (kernfs_fop_write+0xb8/0x19c) > [ 257.658870] [<c012835c>] (kernfs_fop_write) from [<c00cf620>] > (vfs_write+0xa0/0x1ac) > [ 257.666595] [<c00cf620>] (vfs_write) from [<c00cfc78>] > (SyS_write+0x44/0x9c) > [ 257.673625] [<c00cfc78>] (SyS_write) from [<c000e6e0>] > (ret_fast_syscall+0x0/0x30) > [ 257.681176] genirq: PKD: irq_desc->name: (null): irq: 60 > [ 257.686469] genirq: PKD: set_irq_wake_real: ret: -6 > [ 257.691349] s3c-rtc 101e0000.rtc: enable_irq_wake failed: -6 > [ 257.708926] PM: suspend of devices complete after 260.482 msecs > [ 257.713362] BUCK9: No configuration > [ 257.716840] BUCK8: No configuration > [ 257.720309] BUCK7: No configuration > [ 257.723776] BUCK6: No configuration > [ 257.727254] P1.8V_BUCK_OUT5: No configuration > [ 257.731597] LDO26: No configuration > [ 257.735066] LDO25: No configuration > [ 257.738532] LDO24: No configuration > [ 257.742009] LDO23: No configuration > [ 257.745481] LDO22: No configuration > [ 257.748954] LDO21: No configuration > [ 257.752419] LDO20: No configuration > [ 257.755897] LDO19: No configuration > [ 257.759370] LDO18: No configuration > [ 257.762835] LDO17: No configuration > [ 257.766314] P1.8V_LDO_OUT16: No configuration > [ 257.770653] P1.0V_LDO_OUT15: No configuration > [ 257.774994] P1.8V_LDO_OUT14: No configuration > [ 257.779334] P1.8V_LDO_OUT13: No configuration > [ 257.783668] P3.0V_LDO_OUT12: No configuration > [ 257.788013] P1.8V_LDO_OUT11: No configuration > [ 257.792353] P1.8V_LDO_OUT10: No configuration > [ 257.796693] LDO9: No configuration > [ 257.800079] P1.0V_LDO_OUT8: No configuration > [ 257.804332] P1.1V_LDO_OUT7: No configuration > [ 257.808579] P1.1V_LDO_OUT6: No configuration > [ 257.812838] P1.8V_LDO_OUT5: No configuration > [ 257.817091] P2.8V_LDO_OUT4: No configuration > [ 257.821345] P1.8V_LDO_OUT3: No configuration > [ 257.825599] P1.2V_LDO_OUT2: No configuration > [ 257.829851] P1.0V_LDO_OUT1: No configuration > [ 257.835786] PM: late suspend of devices complete after 1.676 msecs > [ 257.841913] PM: noirq suspend of devices complete after 1.420 msecs > [ 257.846737] Disabling non-boot CPUs ... > [ 257.850810] IRQ54 no longer affine to CPU1 > [ 257.850922] CPU1: shutdown > > ------------------------------------ > > Thanks, > Pankaj Dubey > -- Jazz is not dead. 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